About Text Summarizer
The summary is extractive: it selects sentences that already exist rather than writing new ones, so nothing is invented or paraphrased. The wording stays faithful to the source, but a rambling original still produces a rambling summary.
Paste a long article, report or document and extract its most important sentences into a concise summary. It ranks sentences by relevance using an on-device algorithm, giving you a quick TL;DR without reading every paragraph.
No AI service is involved, so there is no cost, no rate limit and nothing queued behind other people's requests. Adjust how many sentences to keep and copy the result in one click.
Extractive summarising has one property that matters more than fluency: it cannot invent. Every sentence in the output appeared verbatim in the input, so the summary can be wrong about emphasis but never about fact. A generative summary reads better and can state something the source never said, which is the wrong failure mode for a contract, a specification or a medical letter.
What it handles poorly is worth knowing before you rely on it. An argument spread thinly across many sentences has no single sentence to select, so it will be under-represented; dialogue and heavily structured documents score badly because sentence boundaries stop matching meaning; and a summary of a rambling original is a shorter ramble, because there was never a well-formed sentence carrying the point.
Sentence length skews any extractive ranking, which is worth knowing when reading the output. Longer sentences contain more scoring terms and are therefore more likely to be selected, so a document written in short declarative sentences can be under-represented relative to one padded with subordinate clauses. If a summary feels like it favoured the wordiest parts of a piece, that is the mechanism rather than a judgement about importance.
Common use cases
- Researchers triaging a stack of papers or reports to decide which few deserve a full read.
- Students condensing a long chapter into the handful of sentences that carry the argument.
- Professionals extracting the operative points from a long email thread or meeting transcript.
- Analysts skimming lengthy filings or policy documents where an invented sentence would be worse than a clumsy one.
- Anyone handling text they are not permitted to paste into a third-party AI service.